I'd be really surprised if your TNT2 had a VGA output AND a DVI output. since you added in that new card, your onboard video probably disabled itself. I'm guessing your TNT2 is PCI becuase mine was. You need to buy a more robust videocard with both a VGA output and a DVI output, or 2 DVI outputs. Nvidia GeForce FX 5200's and ATI Radeon 9250's usually have DVI outputs as well as VGA outputs.